Cortes

Cortes is a monster bounty hunter hired by IMa to look into the missing Mocchi incident. For a while he believes it to be a monster stealing the Mocchis, and when you meet him at the Bugle Inn in Monster Rancher 4, he asks you to take a Mocchi decoy doll to the Kalaragi Rainforest and see if you can draw it out. It turns out to be Geras, and Cortes goes after him when he escapes.